1159415-84-5Relevant academic research and scientific papers
Atropochiral (C,C)-chelating NHC-ylide ligands: Synthesis and resolution of palladium(ii) complexes thereof
Abdellah, Ibrahim,Debono, Nathalie,Canac, Yves,Duhayon, Carine,Chauvin, Remi
, p. 7196 - 7202 (2009)
Atropochiral NHC-phosphonium ylides based on the naphthyl-benzimidazolyl core are targeted as strongly σ-donor C,C-chelating ligands of transition metals. The ligand core is shown to act in either a monodentate (through the carbene center) or bidentate (through the carbene and the ylide centers) fashion in seven palladium(ii) complexes obtained by two sequential strategies. In particular, the enantiomerically pure ortho-palladated (S)-dimethyl(1- phenylethyl)amine co-ligand is used as the chiral resolving agent for the separation of diastereoisomeric NHC-ylide complexes by fractional crystallization. Hydrochloric treatment of either diastereoisomer was found to keep intact the two carbon-palladium bonds, while affording the corresponding enantiomeric β-zwitterionic NHC-ylide palladate complexes. The absolute configuration of the chirally isolated C,C-chelating ligand was finally confirmed by X-ray crystallography.
An atropo-stereogenic diphosphane ligand with a proximal cationic charge: Specific catalytic properties of a palladium complex thereof
Debono, Nathalie,Canac, Yves,Duhayon, Carine,Chauvin, Remi
experimental part, p. 2991 - 2999 (2009/03/11)
A class of cationic diphosphane ligands combining phosphane and amidiniophosphane moieties is illustrated on the N-methyl,N- naphthylbenzimidazolium framework. The palladium(II) complex thereof is described and compared to the corresponding complex of the
